Semgrep is a fast, open-source, static analysis engine for finding bugs, detecting vulnerabilities in third-party dependencies, and enforcing code standards. Semgrep analyzes code locally on your computer or in your build environment: code is never uploaded. Get started →.

Language support

Semgrep supports 30+ languages.



C# · Go · Java · JavaScript · JSX · JSON · PHP · Python · Ruby · Scala · Terraform · TypeScript · TSX


Kotlin · Rust


Bash · C · C++ · Clojure · Dart · Dockerfile · Elixir · HTML · Julia · Jsonnet · Lisp · Lua · OCaml · R · Scheme · Solidity · Swift · YAML · XML · Generic (ERB, Jinja, etc.)

Getting started 🚀

For beginners, we recommend starting with the Semgrep Cloud Platform because it provides a visual interface, a demo project, result triaging and exploration workflows, and makes setup in CI/CD fast. Scans are still local and code isn't uploaded. Alternatively, you can also start with the CLI without logging in and navigate the terminal output to run one-off searches.

Option 1: Getting started from the CLI

  1. Install Semgrep CLI

# For macOS
$ brew install semgrep

# For Ubuntu/WSL/Linux/macOS
$ python3 -m pip install semgrep

# To try Semgrep without installation run via Docker
$ docker run --rm -v "${PWD}:/src" returntocorp/semgrep semgrep
  1. Go to your app's root directory and run semgrep scan --config auto. This will scan your project with the default settings.

  2. [Optional, but recommended] Run semgrep login to get the login URL for the Semgrep Cloud Platform. Open the login URL in the browser and login.

  1. Register to

  2. Explore the demo app

  3. Scan your project by navigating to Projects > Scan New Project > Run scan in CI

  4. Select your version control system and follow the wizard to add your project. After this setup, Semgrep will scan your project after every pull request.

  5. [Optional but recommended] If you want to run Semgrep locally, follow the steps in the CLI section.


  1. Visit Docs > Running rules to learn more about auto config and other rules.

  2. If there are any issues, please ask in the Smegrep Slack group

  3. To run Semgrep Supply Chain, contact the Semgrep team. Visit the full documentation to learn more.

Semgrep Ecosystem

The Semgrep ecosystem includes the following products:

  • Semgrep OSS Engine - The open-source engine at the heart of everything (this project).

  • Semgrep Cloud Platform (SCP) - Deploy, manage, and monitor SAST and SCA at scale using Semgrep, with free and paid tiers. Integrates with continuous integration (CI) providers such as GitHub, GitLab, CircleCI, and more.

  • Semgrep Code - Scan your code with Semgrep's Pro rules and Semgrep Pro Engine to find OWASP Top 10 vulnerabilities and protect against critical security risks specific to your organization. Semgrep Code provides both Community (free) and Team (paid) tiers.

  • Semgrep Supply Chain (SSC) - A high-signal dependency scanner that detects reachable vulnerabilities in open source third-party libraries and functions across the software development life cycle (SDLC). Semgrep Supply Chain is available on Team (paid) tiers.


  • Semgrep Playground - An online interactive tool for writing and sharing rules.

  • Semgrep Registry - 2,000+ community-driven rules covering security, correctness, and dependency vulnerabilities.

Join hundreds of thousands of other developers and security engineers already using Semgrep at companies like GitLab, Dropbox, Slack, Figma, Shopify, HashiCorp, Snowflake, and Trail of Bits.

Semgrep is developed and commercially supported by Semgrep, Inc., a software security company.

Semgrep Rules

Semgrep rules look like the code you already write; no abstract syntax trees, regex wrestling, or painful DSLs. Here's a quick rule for finding Python print() statements.

Run it online in Semgrep’s Playground by clicking here.


Visit Docs > Rule examples for use cases and ideas.

Use caseSemgrep rule

Ban dangerous APIs

Search routes and authentication

Enforce the use secure defaults

Tainted data flowing into sinks

Enforce project best-practices

Codify project-specific knowledge

Audit security hotspots

Audit configuration files

Migrate from deprecated APIs

Apply automatic fixes


Visit Docs > Extensions to learn about using Semgrep in your editor or pre-commit. When integrated into CI and configured to scan pull requests, Semgrep will only report issues introduced by that pull request; this lets you start using Semgrep without fixing or ignoring pre-existing issues!


Browse the full Semgrep documentation on the website. If you’re new to Semgrep, check out Docs > Getting started or the interactive tutorial.


Using remote configuration from the Registry (like --config=p/ci) reports pseudonymous rule metrics to

Using configs from local files (like --config=xyz.yml) does not enable metrics.

To disable Registry rule metrics, use --metrics=off.

The Semgrep privacy policy describes the principles that guide data-collection decisions and the breakdown of the data that are and are not collected when the metrics are enabled.



To upgrade, run the command below associated with how you installed Semgrep:

# Using Homebrew
$ brew upgrade semgrep

# Using pip
$ python3 -m pip install --upgrade semgrep

# Using Docker
$ docker pull returntocorp/semgrep:latest

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